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All Journal Prosiding Semnastek Jurnal Rekayasa Material, Manufaktur & Energi Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Jurnal Ilmiah Teknik Mesin "MEKANIK" IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Jurnal Agro Fabrica IRA Jurnal Pengabdian Kepada Masyarakat

Mahyunis

Institut Teknologi Sawit Indonesia

Author-ID : 540237

Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

Published : 35 Documents Claim Missing Document

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Uji Kinerja Bentuk Plat Aluminium Pada Alat Pengering Pakaian Menggunakan Energi Panas Matahari Dengan Sistem Sirkulasi Alam Kapasitas Ruangan 150 M3 Syukarni Ali; Mahyunis Mahyunis; Jufrizal Jufrizal; Jos Susilo
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 2, No 2 (2016): Oktober
Publisher : universitas teuku umar

Increasing population growth affects the consume energy, it is necessary to conduct a study for product renewable energy. The biggest energy source is Sun, that can not be discharged. One of the utilization of solar energy is for heater. clothes dryer test with the use of aluminum plate as an absorbent and heat release is done by varying the shape of the surface of the different aluminum plate. The variance in the surface shape aluminum plate is used aims to determine heat numbers to be generated by the process of absorption and release of heat. The variation of the surface shape of the aluminum plate is a semi-circular shape surface, the flat shape and trapezoidal wave form. The results of the testing plate variations for clothes dryer, heat transfer rate obtained by the average value of the highest temperature of the aluminum plate is the aluminum surface a semicircle forms of 65.8oC with an average intensity of solar radiation 762,9W / m2. The result of the material jean obtained wet water content of 65.4%, the flow rate of water mass drying of 0.97 grams / minute and an average drying rate of 0.98 grams / minute with a surface area of 3391.2 cm2 semicircle. Keywords : Energy solar radiation, the surface of the aluminum plate shape

Desain dan Pembuatan Alat Penghasil BioetanolSkala Prototype Ilmi Abdullah; Mahyunis Mahyunis; syurkani Ali; Sabam Sabam
Jurnal Mekanova: Mekanikal, Inovasi dan Teknologi Vol 2, No 2 (2016): Oktober
Publisher : universitas teuku umar

Kebutuhan sumber energi alternatif terus meningkat seiring menipisnya cadangan minyak bumi dunia tidak terkecuali Indonesia. Tebu, jagung, ubi, nenas merupakan tanaman yang dapat menghasilkan bioetanol. Proses untuk mendapatkan bioetanol meliputi fermentasi, destilasi, dan dehidrasi. Berdasarkan hal tersebut penulis mendesain dan membuat alat destilasi penghasil bioetanol skala prototype. Perancangan ini meliputi dudukan alat, wadah bahan baku, pipa saluran uap, alat perangkap uap, pipa kondensor, wadah kondensor dan wadah hasil. Berdasarkan perhitungan yang dilakukan wadah bahan baku memiliki volume 1.888 cm3 ≈1,884 liter, sedangkan volume bahan baku adalah 1 liter, oleh karena itu wadah masih memiliki ruang kosong yaitu 884 cm3 yang dapat dimanfaatkan sebagai ruang uap bahan baku sebelum masuk ke pipa saluran uap. Bahan yang digunakan pada alat adalah besi profil L ST37, plat stainless, pipa stainless still, pipa tembaga. Proses pembuatan alat meliputi proses pengukuran pemotongan, penyambungan dan perakitan yang membutuhkan waktu pengerjaan 218,04 menit ≈ 3,38 jam untuk satu unit alat penghasil bioetanol.Kata Kunci : Desain, Pemilihan Bahan dan Pembuatan Alat.

ANALISA UNJUK KERJA MESIN HONDA ASTREA C 800 DENGAN BAHAN BAKAR ETHANOL Ilmi Ilmi; Munajat Munajat; Jufrizal Nurdin; Mahyunis Mahyunis; Nurhidayatullah Nurhidayatullah
Prosiding Semnastek PROSIDING SEMNASTEK 2015
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Perkembangan teknologi dan pertumbuhan ekonomi dunia begitu pesat saat ini. Seiring dengan itu kebutuhan energy tentunya semakin bertambah pada semua sektor. Dari sektor transportasi, misalnya pada kenderaan sepeda motor pertumbuhannya sangat signifikan, tentunyamembutuhkan banyak bahan bakar. Oleh karena itu perlu dicari bahan bakar alternatif sebagai pengganti bahan bakar minyak. Bahan bakar Honda Astrea C800 menggunakan premium atau pertamax, setelah dilakukan penelitian ternyata ethanol dapat dijadikan bahan bakar alternatif. Namun perlu dilakukan beberapa modifikasi pada enjin sehingga memberikan kenaikan efisiensi. Dapat dilihat dari beberapa indikasi perubahan kenaikan torsi, daya, kerja dan mempengaruhi konsumsi bahan bakar. Penelitian ini menggunakan dua jenis bahan bakar yaitu pertamax dan ethanol. Dari hasil modifikasi enjin ternyata kondisi yang optimum tepat pada perbandingan kompresi 11,8 : 1.Kemudian dilakukan penelitian dengan berbagai variasi putaran mesin 3000 rpm, 3500rpm, 4000 rpm, 4500 rpm, 5000 rpm, 5500 rpm dan 6000 rpm. Dari hasil penelitian diperoleh bahwa penggunaan ethanol sangat sesuai bagi enjin sepeda motor Astrea C 800 dapat dilihat dari indikasi yang diperoleh dimana daya maksimal meningkat sebesar 0,45 HP dari penggunaan bahan bakar pertamax pada putaran 6000 rpm demikian pula konsumsi ethanol lebih irit 0,021 l/h dibandingkan denganpertamax.

Perancangan Mesin Penghancur Bonggol Jagung Untuk Pakan Ternak Sapi Dan Kambing Kapasitas 100 Kg/Jam Nehemia Ratur Tarigan; Nurdiana Nurdiana; Iswandi Iswandi; Eswanto Eswanto; Mahyunis Mahyunis; supriadi supriadi; M.Kamil M.Kamil
Rekayasa Material, Manufaktur dan Energi Vol 2, No 1: Maret 2019
Publisher : Fakultas Teknik UMSU

Mesin penghancur bonggol jagung yang direncanakan adalah berfungsi untuk menghancurka bonggol jagung kering menjadi partikel-partikel kecil yang berukuran 2 mm atau lebih kecil mengunakan mekanisme poros, pisau, bantalan, puli, dan motor disel sebagai pengerak. Dalam perecanaan mesin penghancur bonggol jagung kapasitas yang direncanakan adalah 100 kg/jam. Dengan maksud memanfaatkan bonggol jagung menjadi pakan tambahan untuk pakan ternak sapi dan kambing dengan proses yang yang cepat.Pada rancangan penghancur bonggol jagung memiliki konstruksi utama yang terdiri dari mekanisme penghancuran bonggol jagung yang bekerja secara rotary dengan mengunakan poros yang terbuat dari bahan S35S-D dengan panjang 510 mm,diameter 50 mm dan pisau penghancur yang terbuat dari bahan S35C dengan ukuran panjang 100 mm, tebal pisau 5 mm, gaya pnghancur bonggol jagung 108 kg dan mekanisme pengerak digunakan motor disel dengan putaran poros pengerak sebesar 2000 rpm. Sedangkan daya motor yang direncanakan untuk mengerakkan prangkat mesin penghancur bonggol jagung sebesar 16 Pk. Dari hasil perhitungan didapat daya total untuk motor pengerak sebesar 10,2kw dan untuk keamanan digunakan motor disel direncanakan adalah 11,936 kw = 16 Pk dengan putaran 2000 rpm.Dari hasil yang diperoleh dapat disimpulkan bahwa dalam merancang mesin perancang dapat menentukan komponen yang sesuai untuk digunakan dalam mesin penghancur bonggol jagung dan dapat melakukan perhitungan setiap komponen.

Uji Kinerja Mesin Pengiris Bahan Baku Kerupuk Dengan Mekanisme Gerak Translasi Menggunakan Pisau Rotasi Vertikal Kapasitas 60 Kg/Jam Eko Daskiro; Franky Sutrisno; Nurdiana Nurdiana; Zulkifli Lubis; Mahyunis Mahyunis; Eswanto Eswanto
Rekayasa Material, Manufaktur dan Energi Vol 1, No 1: September 2018
Publisher : Fakultas Teknik UMSU

On the slicing machine for raw material for crackers performance test to analyze the effect of speed rotation to the results of slicing crackers which aims to get slicing speed to get productivity and the quality of slicing good raw crackers, and maximum incision capacity. In the analysis of shaft rotation on the results of slicing the raw material of crackers the material used (machine for slicing crackers raw material). Then do the operation or slicing activity of the crackers raw material in three variations, namely at 40 rpm rotation), the results of the slicing of crackers as much as 90.9 kg / hr with 630.6 kw, and at 30 rpm rotation, and the material slicing results obtained. raw crackers were 72.2 kg / hr and power 613.3 kw and at 20 rpm rotation the results of slicing crackers as much as 55.8 kg / hr were obtained with a power of 68 kw. After three rounds of rotation at 40 rpm were carried out, the highest slicing capacity and the best quality were obtained, so the higher the speed, the more raw material for sliced crackers.

Desain dan Pembuatan Alat Uji Impak Jatuh Bebas model Drop Weight Test. Mahyunis; Nurdiana; Farah Dina, Sari; Wito Pirmansyah, Ahmad
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 1 No 1 (2022): April
Publisher : CV. IRA PUBLISHING

The rapid development of technology today is a challenge that must be considered by making technology itself. However, not many pay attention to the qualified aspects that must be in technology. Which can have a bad influence on the work environment. Therefore, this study aims to obtain a re-design and model of a free fall impact test equipment, obtain the main components of a free fall impact test equipment with the drop weight test method and obtain a manufacturing process. This design method uses Autocad software and Ansys Workbench Simulation 14.5. Based on the simulation results, the free fall impact test equipment with the number of each component, namely: 3-node and 4-node. The difference between theoretical calculations and simulation calculations in each component, namely the main structure pole, obtained voltage 1,455, voltage 1.345 and Poisson ratio 0.7, the launcher pipe obtained voltage 1.451, voltage 1.346, Poisson ratio 0.04 and friction coefficient 265.10, anvil table obtained voltage 1.248, Poisson ratio 0.02 and Safety factor 11. The work on the free fall impact test equipment has a manufacturing time of 54.1 minutes.

Analisa Risiko Kecelakaan Kerja Di Stasiun Boiler Pada PT XYZ Dengan Menggunakan Metode HIRARC Mahyunis Mahyunis; Zulham Effendi; Fauzi Asrianto
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 2 No 2 (2023): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v2i2.57

Occupational Safety is the protection of work security experienced by workers both physically and mentally in the work environment. The production process in the boiler division has a very large potential for danger, so it is very important to improve training in the field of work safety. Several things that have potential hazards include the use of incomplete PPE, safety equipment, operation and maintenance, and operator negligence. This study identified the hazards in each activity at PT XYZ. The research findings cover 9 work activities and 14 potential hazards. Scraping activity in the boiler kitchen has the highest work accident rate, which is 34.89% and the operation of the control panel does not cause accidents, with an accident percentage of 0%. The average level of low risk is 10 and medium is 3. However, the PT XYZ has not fully implemented the complete use of Personal Protective Equipment (PPE) at the Boiler Station.

Penerapan SMK3 untuk Mencegah Penyakit Akibat Kebisingan di Stasiun Sterilizer pada Pabrik Kelapa Sawit Mahyunis Mahyunis; Muhammad Syukri; Boby Surya Bimantoro
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 2 No 2 (2023): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v2i2.58

Palm Oil Mill (POM) is a plantation company that specializes in palm oil commodities with outputs in the form of CPO (Crude Palm Oil) and PK (Palm Kernel). 12 processing stations at XYZ POM have high levels of noise, one of which is the sterilizer station which can cause hearing impairment to operators. This study aims to determine the level of noise at the sterilizer station, diagnose hearing impairment due to noise based on audiometry results, and assess the effectiveness of the implementation of the occupational health and safety management system at XYZ POM. The research method used in this study is a quantitative descriptive method using primary and secondary data. From the results of this study, it was found that the calculation of the noise level for 24 hours reached 94.9 dB. This value exceeds the threshold value for noise based on the Regulation of the Minister of Labor and Transmigration No. PER.13/MEN/X/2011 regarding the Threshold Value of Physical and Chemical Factors in the Workplace. To improve the safety and health of employees, XYZ POM implements an Occupational Health and Safety Management System (OHSMS) using the HIRARC (Hazard Identification Risk Assessment and Risk Control) method to identify potential hazards, assess risks and control them, one of which is noise by conducting regular audiometry examinations. The results of the audiometry examination on the sterilizer operator showed normal results. The implementation of the OHSMS at XYZ POM is effective, especially in controlling noise by Government Regulation No. 5 of 2012 regarding the Implementation of the Occupational Health and Safety Management System.

Pengaruh Suhu Dan Kelembapan Terhadap Denyut Nadi Operator Kamar Mesin Di Pabrik Kelapa Sawit PT XYZ Mahyunis, Mahyunis; Raja, Padamulia; Lubis, M Fahmi Fatan
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 2 (2024): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i2.106

A palm oil mill has several workstations involved in processing palm oil into Crude Palm Oil (CPO). According to the Indonesian Minister of Manpower Decree No. 5 of 2018, the ideal temperature in industrial work areas is 23-26˚C. This study aims to measure the temperature and humidity in the engine room, as well as the operators' pulse rates during rest and work, using a quantitative method. Measurements were taken at 09:00, 12:00, and 15:00 at four observation points. The results showed that the highest temperature reached 32.75˚C, exceeding the standard limit, with an average humidity of >80%, also surpassing the industrial standard (40-60%). These conditions indicate the need for improved ventilation and the use of devices such as exhaust fans and dehumidifiers to reduce temperature and humidity. The installation of real-time temperature and humidity control devices is proposed to enhance working conditions in the engine room.

Analisa Kekasaran Bearing 22224 Dan 29420 Mesin Screw Press Di PTPN XYZ Mahyunis, Mahyunis; Effendi, Zulham; Renaldy, Muhammad Aziz
Rekayasa Material, Manufaktur dan Energi Vol 7, No 2: Juli 2024
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v7i2.19507

Palm Oil Mill (POM) is a plantation company that specializes in palm oil commodities with outputs in the form of CPO (Crude Palm Oil) and PK (Palm Kernel). At PTPN xyz there is a machine for extracting palm oil, namely a screw press, in the screw press there are bearing that supports the perfomance of the machine. This research aims to determine the surface roughness of the bearing, a comparison of the roughness value with the ISO (International Standard Organization) as well as the life time data of the bearing material which is adjusted to its specification. The research method used in this study is a qualitatif descriptive method using primary and secondary data. From the results of this research, the research of the analysis of the surface roughness values of bearing 22224 and 29420 were obtained, namely that the bearing experienced a decrease in roughness values from international standard organization standard using roughness tester, suffcorder SE300, Model AS-300, standard tool JIS2001R, series number MEX08756-36, Cut off 2,5mm, speed 0,2mm in µm (Micronmeter).

Co-Authors AA Sudharmawan, AA Abdul Basyir, Abdul Abu Yazid, Abu Agung Prasastiyo, Bima Ali Imran Amru Siregar Ashari, Reza Bagus Setiawan Barita, Barita Boby Surya Bimantoro Busrizal Faisal Darianto, Darianto Eka Bobby Febrianto, Eka Bobby Eko Daskiro Eswanto Eswanto Eswanto Eswanto Faisal, Busrial Farah Dina, Sari Fauzi Asrianto Fazli, Hafiz Darma Firdaus, Khairin Franky Sutrisno Ginting, Fajar Kerehen Yusuf Gultom, D Hari Gunawan Hasibuan, Henry Budi Hutasoi, Slamat Aditia Ika Ucha Pradifta Rangkuti Ilmi Abdullah Ilmi Ilmi Indah Apriliya Iswandi Iswandi Jenny Elisabeth Jos Susilo Jufrizal Jufrizal Kamil, M Lubis, M Fahmi Fatan Lumbanraja, Rafhael Albertus M.Kamil M.Kamil Mahadi, Batu Manullang, Raymond Muhammad Syukri Muldani, Muldani Munajat Munajat Napitu, Patuan L Nasution, Khairin Firdaus Marajoki Nasution, Nafis M Nehemia Ratur Tarigan Noor, Faiz Nur Hidayah Nurdiana Nurdiana Nurdiana Nurhamdi, M Nurhidayatullah Nurhidayatullah Oppusunggu, K Oppusunggu, K. Pada Mulia Raja Renaldy, Muhammad Aziz Ritonga, Abdul Rahman Sabam Sabam Salsabila, Unik Hanifah SAM, M Danny Sarumpaet, Josafat Sembiring, Arifa Sura Silaban, Jhon Adi F. Simangunsong, Samuel Simanullang, Putra Sakti Simarmata, Alex Paul Hendry Sinaga, Patar AP Siti Aisyah Sri Wahyuna Saragih supriadi supriadi supryadi, supryadi Sutrisno, Franky Syukarni Ali syurkani Ali Tanjung, Hairul Bukti Tinambunan, Levi Rentiana Wahyudi, M Wahyuni, Seri Winardi, Rafael Remit Wito Pirmansyah, Ahmad Yulfitra Zainuddin, Zainuddin Zakwan Zakwan, Zakwan Zulham Effendi Zulham Effendi Zulkifli Lubis Zulkifli Lubis Zulyaden Lubis

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